.main_nav {
    height:32px;
	margin-left: -1px;
}
.main_nav li {
    float: left;
    list-style: none;
	font-weight:bold;
}
.main_nav>li
{
	padding:9px 0 0 0;
	position:relative;
	z-index:10
}
.main_nav li.back {
    background: url("../images/main_nav_current_btnR.png") right bottom no-repeat;
    width: 5px; 
    height: 26px;
    z-index:8;
    position: absolute;
	top: 99px;
	padding-top:0 !important;
}
.main_nav li.back .left {
    background: url("../images/main_nav_current_btnL.png") no-repeat;
    height: 26px;
    margin-right: 5px; /* 7px is the width of the rounded shape */
}
.main_nav>li>a {
    text-decoration: none;
    color: #fff;
    outline: none;
    text-align: center;
    letter-spacing: 0;
    z-index: 9;
    display: block;
    float: left;
    height: 25px;
    position: relative;
    overflow: hidden;
    margin: auto 10px;    
}

.main_nav>li>a:hover, .main_nav>li>a:active, .main_nav>li>a:visited {
     border: none;
}                